Two basic algorithm questions

1, Compile the method to generate a one-dimensional array that meets the following requirements. The requirements are as follows: 1) The length of the array is 20 (2 points) 2) Contains all integers (5 points) between two groups (1-10) 3) The position of each element is not fixed, that is, a random array (8 points) 4) The return value of this method is the one-dimensional array (2 points) 5) Code Standard (3 points) 2, Write method: returns the number with the largest number in an integer. If the number is the same, the maximum number in the same number is returned. For example, 12121 returns, returns, and 9 returns the following requirements: 1) Method Declaration (2 points) 2) Calculate the number of occurrences (5 points) 3) Returns the correct number (10 points) 4) Code specification (3 points)